CN210426205U - Square tube convection heat exchanger - Google Patents

Abstract

The utility model provides a square pipe convection heat exchanger, including the hot cigarette case of advancing down and going up out and connect respectively in the heat transfer medium inlet pipe way, the heat transfer medium outlet pipe way of hot cigarette case left and right sides face, heat transfer medium inlet pipe way is through odd number group side pipe and heat transfer medium outlet pipe way intercommunication, and every group side pipe is parallel to each other and the level runs through hot cigarette case left and right sides face. Compare with the heat exchanger that adopts the pipe, the utility model provides a square pipe directly accepts the area that high temperature gaseous state medium erodees big, and heat exchange efficiency is high, and heat transfer medium will reach the same intensification effect and need less square pipe, has reduced the use amount of heat transfer tube material, has reduced the volume of heat exchanger simultaneously.

Description

Square tube convection heat exchanger

Technical Field

The utility model relates to a heat exchange equipment field, concretely relates to square pipe convection heat exchanger that natural gas hydrogen plant used.

Background

Generally, a coiled convection heat exchanger is adopted in a hydrocarbon conversion device, and is distributed in a convection section according to the distribution of a thermal field of the convection section and the requirement of heat for temperature rise of a heat exchange medium.

The heat exchange tube basically all adopts the pipe to arrange in bank or in line in the hot cigarette case, but the pipe compares with square pipe, and the area that the pipe directly accepts high temperature gaseous medium to erode is about 30% less than square pipe, and heat exchange efficiency is lower, and to the pipe of equal length and square pipe promptly, the heat transfer area of pipe is less than the heat transfer area of square pipe, therefore heat transfer medium will reach the same intensification effect and need more pipes, leads to the heat exchanger bulky, causes the heat exchange tube material serious waste.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can effectively improve heat exchange efficiency to can reduce the square pipe convection heat exchanger of heat exchange tube material use amount.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of square pipe convection heat exchanger, including the hot smoke box of advancing down and going up out and connect respectively in the heat transfer medium inlet pipe way, the heat transfer medium outlet pipe way of hot smoke box left and right sides face, heat transfer medium inlet pipe way through odd number group side pipe with heat transfer medium outlet pipe says intercommunication, every group side pipe be parallel to each other and the level runs through the hot smoke box left and right sides face.

Furthermore, a plurality of identical separation chambers are arranged in the heat exchange medium inlet pipeline, and each separation chamber corresponds to two groups of square pipes; the heat exchange medium outlet pipeline is provided with a plurality of identical reversing covers covering the square pipes, each reversing cover is covered with two groups of square pipes and arranged with the partition chamber in a staggered mode, and the square pipes in each group are connected into an S-shaped path for the heat exchange medium to flow.

Further, the inlet of the heat exchange medium inlet pipeline and the outlet of the heat exchange medium outlet pipeline are located on the same side, and the outlet of the heat exchange medium outlet pipeline and the outlet of the hot smoke box are in the same direction.

Furthermore, the number of the square pipes in each group is provided with a plurality of square pipes which are arranged in a regular triangle.

Furthermore, the hot smoke box is arranged inside a heat exchanger shell, and heat-insulating linings are laid around the heat exchanger shell.

Compared with the prior art, the utility model provides a square pipe convection heat exchanger has following beneficial effect:

1. compared with a heat exchanger adopting a round pipe, the square pipe has the advantages that the area of the square pipe directly receiving high-temperature gaseous medium to wash is large, the heat exchange efficiency is high, fewer square pipes are needed for the heat exchange medium to reach the same temperature rise effect, the use amount of heat exchange pipe materials is reduced, and the size of the heat exchanger is reduced;

2. the arranged separation chambers and the reversing cover enable each group of square tubes to be connected into an S-shaped path for the heat exchange medium to flow in a front-back mode, so that the heat exchange medium can be fully subjected to heat exchange with the high-temperature gaseous medium in the hot smoke box when flowing through the square tubes, and the heat exchange efficiency is further improved;

3. the square pipe adopts regular triangle to arrange, can make the high temperature gaseous state medium in the hot smoke box fully contact with each side's pipe, has improved heat exchange efficiency once more.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of arrangement of square pipes in the hot smoke box.

The reference numerals are explained below:

1: and (3) heating the smoke box 2: heat exchange medium inlet pipeline

21: compartment 3: heat exchange medium outlet pipeline

31: the reversing cover 4: square tube

5: the heat exchanger housing 6: and (6) insulating the lining.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

As shown in fig. 1-2, the utility model provides a square pipe heat convection, including the hot smoke box 1 of advancing down and going up out and connect respectively in heat transfer medium inlet pipe 2, the heat transfer medium outlet pipe 3 of the 1 left and right sides face of hot smoke box, heat transfer medium inlet pipe 2 is through odd number group side's pipe 4 and heat transfer medium outlet pipe 3 intercommunication, and every group side's pipe 4 is parallel to each other and the level runs through the 1 left and right sides face of hot smoke box.

Compare with the heat exchanger that adopts the pipe, the utility model provides a square pipe directly accepts the area that high temperature gaseous state medium erodees big, and heat exchange efficiency is high, and heat transfer medium will reach the same intensification effect and need less square pipe, has reduced the use amount of heat transfer tube material, has reduced the volume of heat exchanger simultaneously.

A plurality of identical separation chambers 21 are arranged in the heat exchange medium inlet pipeline 2, and each separation chamber 21 corresponds to two groups of square pipes 4; the heat exchange medium outlet pipeline 3 is provided with a plurality of identical reversing hoods 31 covering the square pipes 4, each reversing hood 31 is covered with two groups of square pipes 4 and staggered with the separation chamber 21 by one group of square pipes 4, and each group of square pipes 4 are connected back and forth to form an S-shaped path for the heat exchange medium to flow. The compartment 21 and the reversing cover 31 that set up for every group side pipe 4 is connected into the S type route that supplies heat transfer medium to flow from beginning to end, has guaranteed that heat transfer medium can fully take place the heat exchange with the high temperature gaseous medium in the hot smoke box 1 when square pipe 4 of flowing through, has further improved heat exchange efficiency.

The inlet of the heat exchange medium inlet pipeline 2 and the outlet of the heat exchange medium outlet pipeline 3 are positioned on the same side, and the outlet of the heat exchange medium outlet pipeline 3 and the outlet of the hot smoke box 1 are in the same direction. So set up, the mutual reverse flow of high temperature gaseous state medium in heat transfer medium and the hot smoke box 1 has effectively guaranteed higher heat exchange efficiency.

When the natural gas hydrogen production conversion device works, heat directly combusted by natural gas in a natural gas hydrogen production conversion section (not shown in the figure) is used for hydrogen production by the natural gas, high-temperature flue gas generated by combustion of the natural gas, namely high-temperature gaseous medium, enters the hot smoke box 1 from the inlet of the hot smoke box 1 and carries out heat convection with the square pipe 4, and the high-temperature flue gas after heat exchange leaves from the outlet of the hot smoke box 1; the heat exchange medium flows through the square pipe 4 from the inlet of the heat exchange medium inlet pipeline 2 and then enters the heat exchange medium outlet pipeline 3, the heat exchange medium exchanges heat back and forth among the heat exchange medium inlet pipeline 2, the square pipe 4 and the heat exchange medium outlet pipeline 3 until the temperature is raised to a required temperature, and then the heat exchange medium leaves from the outlet of the heat exchange medium outlet pipeline 3 to complete the whole heat exchange process.

The number of each group of square pipes 4 is provided with a plurality of square pipes which are arranged in a regular triangle, and the square pipes are shown in figure 2. The square tubes arranged in the regular triangle can ensure that the high-temperature gaseous medium in the hot smoke box 1 is fully contacted with each square tube 4, and the heat exchange efficiency is improved again.

The hot smoke box 1 is arranged inside a heat exchanger shell 5, and heat-insulating linings 6 are laid around the heat exchanger shell 5. The heat preservation lining 6 not only can play the heat preservation effect, can prevent 5 temperature risees of heat exchanger casing simultaneously and take place to scald the accident.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a square pipe convection heat exchanger, including the hot smoke box (1) of advancing down and go up out and connect respectively in heat transfer medium inlet pipe way (2), heat transfer medium outlet pipe way (3) of hot smoke box (1) left and right sides face, its characterized in that, heat transfer medium inlet pipe way (2) through odd number group side pipe (4) with heat transfer medium outlet pipe way (3) intercommunication, every group side pipe (4) be parallel to each other and the level runs through hot smoke box (1) left and right sides face.

2. The square tube convection heat exchanger according to claim 1, wherein a plurality of identical compartments (21) are provided in the heat exchange medium inlet pipe (2), and each compartment (21) corresponds to two sets of square tubes (4); the heat exchange medium outlet pipeline (3) is provided with a plurality of identical reversing covers (31) covered on the square pipes (4), each reversing cover (31) is covered with two groups of square pipes (4) and arranged with the separating chamber (21) in a staggered mode with one group of square pipes (4), and the square pipes (4) in each group are connected into an S-shaped path for the heat exchange medium to flow.

3. The square tube convection heat exchanger according to claim 1 or 2, wherein the inlet of the heat exchange medium inlet pipe (2) and the outlet of the heat exchange medium outlet pipe (3) are located on the same side, and the outlet of the heat exchange medium outlet pipe (3) and the outlet of the heat smoke box (1) are in the same direction.

4. The square tube convection heat exchanger according to claim 1 or 2, wherein the number of the square tubes (4) in each group is provided with a plurality of square tubes, and the square tubes are arranged in a regular triangle.

5. The square tube convection heat exchanger of claim 1, wherein the hot smoke box (1) is installed inside a heat exchanger shell (5), and a heat preservation lining (6) is laid around the heat exchanger shell (5).

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